BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY WEDNESDAY, APRIL 27, 2005 ALL TIMES EASTERN DAYLIGHT TIME UNLESS OTHERWISE NOTED TODAY'S DISCUSSION.....at 2 p.m. LIGHT RAIN TODAY AND SOMEWHAT GUSTY E TO ESE WINDS UP TO 25 TO 30 MPH THROUGH EARLY AFTERNOON... It's been just light rain so far today with a total of 0.26 inch thru 2 p.m. Southeast winds backed to east to east-southeast and have been gusting to only 25 to 30 mph... Low clouds have enveloped the summit since about mid-morning with visibilities of 1/8 to 1/16 of a mile. TODAY'S OBSERVATIONS 4/27/2005 WED 8 a.m. overcast with 5 miles visibility in light rain and fog; temp. 51; dewpoint 50; wind southeast at 16 mph; six hourly min. temp. 49; six hourly precip. 0.01; 24 hour precip. 0.01 BHO SA 1155 8 SCT E28 BKN 40 OVC 5R-F 144/51/50/1314/996/ VSBY LWRG PST HR RB15/ 8/72/ 58002 ASOS 60001 MANUAL 6001/ ASOS 70001 MANUAL 70001 10052 20049 11 a.m. obscurement with heavy fog; visibility 1/8 mile occasional 1.5 miles to the northwest with light rain and heavy fog; temp./dewpoint 51; wind from east at 15 mph; 3-hourly rainfall 0.02 inch BHO SA 1455 W2 X 1/8R-F 124/51/51/1013/990/ VSBY OCNL BRFLY 11/2 NW/ 8//// 56020 ASOS 60002 MANUAL 6002/ 2 p.m. obscurement with heavy fog; visibility 1/16 mile in light rain, light drizzle and heavy fog; temp./dewpoint 52; wind east at 16 gusting to 25 mph; six hourly min. temp. 51; six hourly rainfall 0.25 inch BHO SA 1755 W2 X 1/16R-L-F 094/52/52/1014G22/981/ 8//// 56030 ASOS 60025 MANUAL 6025/ 10052 20051 WEATHER SUMMARY FOR TUESDAY APRIL 26: TEMPERATURE (DEGREES F) MAX.....67 NORMAL.....60 HAZEN 67.2 @ 1:49 p.m. MIN.....40 NORMAL.....40 HAZEN 39.6 @ 4:18 a.m. MEAN....54 NORMAL.....50 DEPARTURE FROM 30-YEAR NORMAL...... + 4 TOTAL DEPARTURE FOR THE MONTH..... + 103 (+3.8 DEGREES/DAY) PRECIPITATION (INCHES) THROUGH THIS MORNING TOTAL PRECIPITATION 24 HRS ENDING 8 A.M....0.01 DEPARTURE....-0.13 ASOS..............0.01 TOTAL PRECIPITATION FOR THE MONTH..........3.52 DEPARTURE....-0.28 ASOS..............3.47 TOTAL PRECIPITATION FOR THE YEAR..........19.98 DEPARTURE.....+2.70 TOTAL FOR ASOS FOR THE YEAR...............18.97 SNOWFALL (INCHES) THROUGH THIS MORNING TOTAL SNOWFALL 24 HRS ENDING 8 A.M........ 0.0 DEPARTURE....- 0.1 TOTAL SNOWFALL FOR THE MONTH.............. 0.2 DEPARTURE....- 2.5 TOTAL SNOWFALL FOR THE SEASON.............119.4 DEPARTURE.....+59.5 YESTERDAY'S PEAK GUSTS AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........43 S AT 2:37 P.M. AEROVANE.........46 S AT 2:37 P.M. ASOS.............39 S AT 2:37 P.M. DAVIS............40 S AT 5:01 P.M. FASTEST MILE FOR YESTERDAY......... 31 S AT 3:53 P.M. ** MAXIMUM 2-MINUTE ASOS AVERAGE.......31 S AT 2:38 P.M. MAXIMUM 1-MINUTE DAVIS AVERAGE......32 S AT 5:02 P.M. OUR AVERAGE SPEED AND DIRECTION.....16.8 S ASOS AVERAGE AND DIRECTION..........17.7 S [190 deg] DAVIS AVERAGE AND DIRECTION.........16.9 S [180 deg] ** last of several occurrences .... THE PRELIMINARY CLIMATE SUMMARY FOR APRIL 2005...... CALENDAR DAY DATA DATA REPORTED HERE ENDING MIDNIGHT STANDARD TIME DATE MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system when significant TSTM: Thunderstorm day ....: Data not yet available 4/1 56/36/46/+5/0.01/0/283/37 23 MPH SE 4/2 56/35/46/+4/1.04/0/000/00 53 MPH SE 4/3 53/39/46/+4/0.63.0/254/33 54 MPH SE Aero 55 MPH SE 4/4 52/37/45/+3/0.01/0/131/17 32 MPH W 4/5 63/35/49/+6/0/0/721/93 32 MPH WNW Aero 35 MPH WNW 4/6 66/43/55/+12/0/0/591/76 25 MPH S 4/7 70/44/57/+14/0.07/0/164/21 46 MPH SSW 4/8 56/43/50/+6/0.25/0/212/27 32 MPH NW 4/9 58/39/49/+5/0/0/786/100 22 MPH NW 4/10 70/39/55/+11/0/0/742/94 38 MPH NNE 4/11 48/36/42/-3/0/0/744/94 32 MPH NNE 4/12 48/28/38/-7/0.03/0.2/413/52 32 MPH NE 4/13 50/28/39/-6/0/0/622/78 22 MPH WNW 4/14 50/36/43/-3/0/0/760/95 23 MPH WNW 4/15 48/34/41/-5/0/0/787/98 35 MPH NE 4/16 55/35/45/-1/0/0/790/98 22 MPH ESE 4/17 74/37/56/+9/0/0/784/97 23 MPH WNW 4/18 70/48/59/+12/0/0/795/98 27 MPH NW Aero 30 MPH WNW 4/19 78/46/62/+15/0/0/.../.. 27 MPH SSW 4/20 86/47/67/+19/0.05/0/458/56 44 MPH NNE 4/21 58/38/48/0/0.11/0/.../.. 37 MPH N 4/22 61/38/50/+1/T/0/.../.. 33 MPH SSE 4/23 62/41/52/+3/0.50/.../.. 52 MPH S 4/24 58/41/50/+1/0.61/.../.. 46 MPH SE 4/25 50/38/44/-6/0.20/.../.. 39 MPH SSW 4/26 67/40/54/+4/0/0/.../.. 43 MPH S 4/27 morning low temp. 49 deg; rainfall thru 8 a.m. 0.01 inch DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR APRIL 27 HIGH 93 IN 1990 LOW 28 IN 1919 PRECIP 1.89 IN 1979 SNOWFALL 2.7 IN. IN 1993 PEAK GUST 65e MPH N IN 1941 RECORDS FOR APRIL 28 HIGH 92 IN 1990 LOW 26 IN 1947 PRECIP 2.41 IN 1904 SNOWFALL 10.0 IN. IN 1987 PEAK GUST 69 MPH NE 1967 TODAY'S REPORT BY: Robert Skilling